Spatial-domain design of two-dimensional recursive digital filters. - Samy A. H. Aly; Moustafa M. Fahmy (ICASSP, 1980)

2-D separable digital filters. - Samy A. H. Aly; Moustafa M. Fahmy (ICASSP, 1981)

Symmetry in two-dimensional rectangularly-sampled digital filters. - Samy A. H. Aly; Moustafa M. Fahmy (ICASSP, 1981)